The House is more difficult. Real Clear Politics currently has it 206-189 Democrats with 40 "toss up" seats (38 of those currently held by GOP). GOP will need to win 29 of 40 toss up races. I think they fall just short, with a 5-7 seat Dem majority. If Republican intensity picks up, they could hold the House by a thin margin.
I’m not really up on predictions but Rosenstien and Sessions will be asked to go on the road with Trump and if they refuse he will fire them. Rosenstien will refuse because there are no hands for him to shake on the road and, to get back at Trump, will demand that he keep his security clearance or he will be hired by MSNBC as another talking head to badmouth the President. Sessions says he would go on the road, but has to pack his guitar first and practice his Willie Nelson impression and the line out of “Cool Hand Luke” where he says, “What we have here is a failure to communicate.” The House & Senate might be burnt down by an antifa protester with a bazooka... in which case the elections will have to be withheld till next year when the Mueller Investigation finally wraps up. Kavanagh will be sworn in and Ford will claim she got pregnant, but had to abort the baby because the psychotic meds she’s taking would have had a bad effect on the kid. Anyway, there will be more hand wringing and Handmaiden’s Tails as fashion proclaims the mini shirt look to the maidens. Dresses will be so short that... well, things will be seen.
The republicans will lose the house. The Senate will be tied.
Trump turns significantly to the center. And by the time he is done he will be less popular than Bush Jr here on FR.
This is going to get very nasty to the point of people getting shot. Chicago ‘68 will appear tame.